Hearing
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Éléments de cette leçon
Slide 1 - Diapositive
Slide 2 - Diapositive
Slide 3 - Diapositive
Slide 4 - Diapositive
Slide 5 - Diapositive
Slide 6 - Diapositive
Slide 7 - Diapositive
True
False
Sound waves cannot travel in a vacuum.
The pitch of a sound depends on the amplitude of the wave.
Frequency is measured in decibels (dB).
Hearing improves with age.
Sound is caused by vibrating particles.
Sound travels fastest in a solid.
Slide 8 - Question de remorquage
Which wave is louder?
A
A
B
B
Slide 9 - Quiz
Which wave is higher pitched?
A
Top
B
Bottom
Slide 10 - Quiz
Define amplitude.
Slide 11 - Question ouverte
Define wavelength.
Slide 12 - Question ouverte
Define frequency.
Slide 13 - Question ouverte
Slide 14 - Diapositive
Slide 15 - Diapositive
Slide 16 - Diapositive
Label the ear.
Ossicles
Cochlea
Ear drum
Slide 17 - Question de remorquage
Ear canal
Cochlea
Ear drum
Ossicles
Pinna
Auditory nerve
Slide 18 - Question de remorquage
In what order do sound waves travel through the structure of the ear to the brain?
Ear canal
Ossicles
Ear drum
Cochlea
Slide 19 - Question de remorquage
Match the structure to its function.
Converts the vibrations into electrical signals using small hairs.
Passes on vibrations to small bones.
Sends the electrical signals to the brain.
Outer part of the ear that channels the vibrating air.
Tube through which vibrating air particles pass along.
Small bones that amplify the vibrations.
Ossicles
Ear drum
Pinna
Ear canal
Cochlea
Auditory nerve
Slide 20 - Question de remorquage
Explain why it might be a problem if the auditory nerve if damaged.
Slide 21 - Question ouverte
What is the unit of loudness?
Slide 22 - Question ouverte
Slide 23 - Diapositive
Which sound fits into each section of the table?
0 dB
20 dB
40 dB
60 dB
80 dB
100 dB
120 dB
140 dB
Can't be heard
Normal speech
Pain threshold
Gunshot
Heavy traffic
Rustling leaves
Talking quietly
Plane taking off
Slide 24 - Question de remorquage
Slide 25 - Diapositive
Slide 26 - Diapositive
Why do you think a loud sound can cause the ear drum to rupture?
Slide 27 - Question ouverte
Slide 28 - Diapositive
Which things could damage your hearing?
Damaging to hearing
Loud noises
Quiet sounds
A build up of ear wax
Head injury
Wearing ear defenders
Using cotton buds
Slide 29 - Question de remorquage
What things can we use/do to reduce the risk of damaging our ears?
Slide 30 - Question ouverte
Slide 31 - Diapositive
Slide 32 - Diapositive
Explain why mobile phones have a warning level on headphones and will sometimes turn the volume down if you have been listening for a long time.
